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PostPosted: Mon Apr 18, 2016 9:20 am 
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Joined: Mon Apr 01, 2013 8:32 am
Posts: 5
Hi,

With the current astronomy gear is it possible to image deep sky objects/planets without dark, bias, flat field frames, without polar alignment, with good results?

I tried shooting images a few years ago but I thought it was too complex and frustrating. I wondered if it can be done easily now?

Thank you. Cheers


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PostPosted: Mon Apr 18, 2016 1:23 pm 
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Joined: Mon Jan 18, 2010 9:25 am
Posts: 5298
Maybe with Sony A7S and A7S II or Nikon 500?, the one going to 1.6million ISO. The big brother goes to 3.2million ISO.

I get mag 8 stars in about 1/20 or 1/15 second at 50,000 ISO or 100,000 ISO with Samyang 85mm f/1.4 at full aperture. Single frame. Maybe mag 7 in corners full frame. Good star images, but for longer exposures you probably have to use f/2.8.
In town I cannot expose longer without fog. Mag 3 stars unaided eyes.

Regards,
David


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